diff --git a/boot.php b/boot.php
index 7d359d011..72e86e42b 100755
--- a/boot.php
+++ b/boot.php
@@ -1669,7 +1669,7 @@ function goaway($s) {
 
 function shutdown() {
 	global $db;
-	if($db)
+	if(is_object($db) && $db->connected)
 		$db->close();
 }